presprent obama: i'm barack obama and... i approve this message. look, the reason i'm in this race is there are people that are really hurting day in this country. and we face this deficit -- could crush the future generations. and republicans and democrats both love america but we need to have leadership -- leadership in washington that will actually bring people together and get the job done and could not care less if it's a republin or a democrat. i've done it before, i'll do it again. i'm mitt romney, and i approve this message. i put away money. i was 21, so i said, "hmm, i want to retire at 55." and before you know it, i'm 58 years old. time went by very fast. it goes by too, too fast. ♪ but i would do it again in a heartbeat. [ laughs ] ♪ ♪ captioned by the national captioning institute --www.ncicap.org-- >> the presidential candidates weekend, flying from battleground states, including virginia. just three days away from election day and a final push, obama it is enlisting a former president and a music star. scott thuman joins us fro